Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702735 | Molding arrangement to achieve short mold cycle time | Wallace Anthony Martin, Wybren Van Der Meulen, Kornelis Renkema, Robert B. Phillips, Victor Lust +2 more | 1997-12-30 |
| 5684560 | Concentric ring single vision lens designs | Jeffrey H. Roffman | 1997-11-04 |
| 5682223 | Multifocal lens designs with intermediate optical powers | Jeffrey H. Roffman | 1997-10-28 |
| 5652638 | Concentric annular ring lens designs for astigmatism | Jeffrey H. Roffman | 1997-07-29 |
| 5650837 | Rotationally stable contact lens designs | Jeffrey H. Roffman, Timothy A. Clutterbuck, Yulin X. Lewis | 1997-07-22 |